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/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
This example code is in the public domain.
*/
// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
pinMode(10, OUTPUT);
}
int LED0 = 0x01;
int LED1 = 0x02;
int LED2 = 0x04;
int LED3 = 0x08;
int PWM_BASE = 15;
void channel_set (int duration, int leds, int pwm)
{
for (int i = 0; i < duration; i+=PWM_BASE) {
digitalWrite (10, leds & LED0);
digitalWrite (11, leds & LED1);
digitalWrite (12, leds & LED2);
digitalWrite (13, leds & LED3);
if ((pwm > PWM_BASE) || (pwm == 0)) {
delay (PWM_BASE);
continue;
}
delay (PWM_BASE-pwm);
digitalWrite (10, 0);
digitalWrite (11, 0);
digitalWrite (12, 0);
digitalWrite (13, 0);
delay (PWM_BASE-(PWM_BASE-pwm));
}
}
void run_left(int num, int f, int pwm)
{
int i = 1;
while (num) {
channel_set (f, LED3, pwm);
channel_set (f, LED2, pwm);
channel_set (f, LED1, pwm);
if (i >= num)
break;
channel_set (f, LED0, pwm);
i++;
}
}
void run_right(int num, int f, int pwm)
{
int i = 1;
while (num) {
channel_set (f, LED0, pwm);
channel_set (f, LED1, pwm);
channel_set (f, LED2, pwm);
if (i >= num)
break;
channel_set (f, LED3, pwm);
i++;
}
}
void red_white (int num, int f, int pwm)
{
for (int i=0; i<num; i++)
{
channel_set (f, LED0|LED2, pwm);
channel_set (f, 0, pwm);
}
for (int i=0; i<num; i++)
{
channel_set (f, LED1|LED3, pwm);
channel_set (f, 0, pwm);
}
for (int i=0; i<num; i++)
{
channel_set (f, LED1, pwm);
channel_set (f, LED3, pwm);
}
for (int i=0; i<num; i++)
{
channel_set (f, LED0, pwm);
channel_set (f, LED2, pwm);
}
}
void lr_speedup (int num, int pwm)
{
int f_start = 100;
int i = 0;
do {
run_right (num-i, f_start, pwm);
run_left (num-i, f_start, pwm);
i++;
f_start += (5 * i);
} while (i < num);
}
void flash (int num, int on, int off, int pwm)
{
for (int i=0; i<num; i++)
{
channel_set (on, LED0|LED2, pwm);
channel_set (off, 0, pwm);
channel_set (on, LED1|LED3, pwm);
channel_set (off, 0, pwm);
}
}
void dimmer (int f)
{
for (int i = PWM_BASE; i > 0; i--)
channel_set (f*(i/4), LED0|LED1|LED2|LED3, i);
channel_set (f*20, LED0|LED1|LED2|LED3, 0);
for (int i = 1; i <= PWM_BASE; i++)
channel_set (f*(i/4), LED0|LED1|LED2|LED3, i);
}
// the loop routine runs over and over again forever:
void loop() {
dimmer (250);
red_white (3, 400, PWM_BASE-1);
flash (10, 200, 80, PWM_BASE-1);
lr_speedup (4, PWM_BASE-1);
}
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